Summation of Divergent Series and Quantum Phase Transitions in Kitaev Chains with Long-Range Hopping

Hao Fu, Peiqing Tong

We study the quantum phase transitions (QPTs) in extended Kitaev chains with long-range ($1/r^{\hat{I}}\pm$) hopping. Formally, there are two QPT points at $\hat{I}¼=\hat{I}{¼}_0(\hat{I}\pm )$ and $\hat{I}{¼}_{\ddot{I}}€(\hat{I}\pm )$ ($μ…